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[199.106.103.254]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-2c0e559ff3fsm6714643eec.21.2026.03.18.22.22.00 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 18 Mar 2026 22:22:03 -0700 (PDT) Message-ID: <1603a5b0-8edd-4c31-b2d1-344ee7df10ac@oss.qualcomm.com> Date: Thu, 19 Mar 2026 13:21:58 +0800 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v1] Bluetooth: hci_qca: disable power control for WCN7850 when bt_en is not defined To: Dmitry Baryshkov Cc: Bartosz Golaszewski , Marcel Holtmann , Luiz Augusto von Dentz , linux-arm-msm@vger.kernel.org, linux-bluetooth@vger.kernel.org, linux-kernel@vger.kernel.org, cheng.jiang@oss.qualcomm.com, quic_chezhou@quicinc.com, wei.deng@oss.qualcomm.com, jinwang.li@oss.qualcomm.com, mengshi.wu@oss.qualcomm.com References: <20260319031040.4096297-1-shuai.zhang@oss.qualcomm.com> Content-Language: en-US From: Shuai Zhang In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Proofpoint-ORIG-GUID: ymRUsKJFL8n9z1psX_o_MXIi-IYyWD8R X-Proofpoint-GUID: ymRUsKJFL8n9z1psX_o_MXIi-IYyWD8R X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMzE5MDAzOCBTYWx0ZWRfX+FxJcdlSfsQ1 hnryW7iD5PrGQDuPd+SL/KmVwijZr9a4kpE1ctL2I19K0aKTjgI0EylsJn2ZOyxjtxbx8uS8ix6 Rw6A6qf+Y5lViDCo+eOJoQO3ZJdwbZZL332kIqTsFMzX3VzwVubNQqWmY2nNWX8mdPXDfDUxDFC fFSEtluENFMp/a2jMbCgCJSUEeYehe3zcfLNlQvo4RATbxHI5qRxjkNkTLBkh3zd6dPzHsaI+BT WPcrGY0lXtCIouZPUIj/PMUNDp2Ft30gh4oXTf/SDUVOZDE2utT3pV/gqhFuKnexRkP8UUwDUc5 bJ6D7VRHrG1JeOtj0i82VRqR19xAj8robfCVqD9M/FjA9fMt5IolPrKrdLtZW4joGOq2A3B3Ihm k6oJQnp6CJ9Nt4pg1u8xC5xgP77gLQnfnCuopLevfEaDConaNReo4oBzTUCfJy6DaREWoDn0OBZ njUXYN+WSDhw45oO5Sg== X-Authority-Analysis: v=2.4 cv=WO9yn3sR c=1 sm=1 tr=0 ts=69bb87fd cx=c_pps a=wEP8DlPgTf/vqF+yE6f9lg==:117 a=JYp8KDb2vCoCEuGobkYCKw==:17 a=IkcTkHD0fZMA:10 a=Yq5XynenixoA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=ZpdpYltYx_vBUK5n70dp:22 a=EUspDBNiAAAA:8 a=AYBSpBTACJuzp8GJotcA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=bBxd6f-gb0O0v-kibOvt:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-03-19_01,2026-03-17_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 suspectscore=0 lowpriorityscore=0 impostorscore=0 adultscore=0 clxscore=1015 spamscore=0 malwarescore=0 phishscore=0 bulkscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2603050001 definitions=main-2603190038 Hi  Dmitry On 3/19/2026 11:51 AM, Dmitry Baryshkov wrote: > On Thu, Mar 19, 2026 at 11:10:40AM +0800, Shuai Zhang wrote: >> For platforms where the bt_en GPIO is not defined, software-based power >> control should be disabled when power is managed by hardware. > What does it mean for this chip, managing the power in hardware? bt_en is pulled high by hardware, or described in the device tree as a regular always-on GPIO. >> Add QCA_WCN7850 to the existing condition so that power_ctrl_enabled is >> cleared when bt_en is absent, aligning its behavior with WCN6750 and >> WCN6855. >> >> Signed-off-by: Shuai Zhang >> --- >> drivers/bluetooth/hci_qca.c | 3 ++- >> 1 file changed, 2 insertions(+), 1 deletion(-) >> >> diff --git a/drivers/bluetooth/hci_qca.c b/drivers/bluetooth/hci_qca.c >> index c17a462aef55..4512ff7cd0c0 100644 >> --- a/drivers/bluetooth/hci_qca.c >> +++ b/drivers/bluetooth/hci_qca.c >> @@ -2484,7 +2484,8 @@ static int qca_serdev_probe(struct serdev_device *serdev) >> >> if (!qcadev->bt_en && >> (data->soc_type == QCA_WCN6750 || >> - data->soc_type == QCA_WCN6855)) >> + data->soc_type == QCA_WCN6855 || >> + data->soc_type == QCA_WCN7850)) >> power_ctrl_enabled = false; >> >> qcadev->sw_ctrl = devm_gpiod_get_optional(&serdev->dev, "swctrl", >> -- >> 2.34.1 >>